Download AKTU B-Tech 3rd Sem 2016-2017 NME 303 Thermodynamics Question Paper

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

I Year B.Tech. I Semester Examinations, December - 2016

ENGINEERING PHYSICS - I

(Common to CE, EEE, ME, ECE, CSE, EIE, IT, MCT, ETM, MMT, AE, AME, PTM, AGE)

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Time: 3 Hours Max. Marks: 75

Note: This question paper contains two parts A and B.

Part A is compulsory which carries 25 marks. Answer all questions in Part A.

Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks.

PART - A (25 Marks)

1. 1. What are the conditions for sustained interference? [2M]

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   2. What is double refraction? [3M]
   3. Define magnetostriction effect. [2M]
   4. Write the relation between electric field and polarization. [3M]
   5. Write the applications of lasers. [2M]
   6. Define numerical aperture of an optical fiber. [3M]

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   7. State Heisenberg’s uncertainty principle. [2M]
   8. What is the importance of wave function? [3M]
   9. What are Miller indices? [2M]
   10. Define packing fraction and void ratio. [3M]

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PART - B (50 Marks)

(Answer any one full question from each unit)

UNIT - I

1. a) Explain the formation of Newton’s rings with necessary theory. [5M]
   b) In a Newton’s rings experiment the diameter of 5th ring is 0.30 cm and the diameter of 25th ring is 0.80 cm. If the radius of curvature of the plano-convex lens is 100 cm, calculate the wavelength of the light used. [5M]
   OR
2. a) Explain the construction and working of Nicol prism. [5M]
   

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   b) Discuss the applications of lasers in detail. [5M]

UNIT - II

1. a) Explain the phenomena of ferromagnetism. Explain the domain theory of ferromagnetism. [5M]
   b) Derive the relation between different polarization vectors P, E and D. [5M]
   OR
2. a) Explain the construction and working of a semiconductor laser. [5M]
   

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   b) Explain different types of optical fibers with neat diagrams. [5M]

UNIT - III

1. a) Derive Schrodinger’s time independent wave equation. [5M]
   b) Explain the physical significance of wave function. [5M]
   OR
2. a) Deduce de Broglie wavelength. Explain G. P. Thomson experiment verifying de Broglie hypothesis. [5M]
   

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   b) Derive the energy levels of a particle in one dimensional potential box. [5M]

UNIT - IV

1. a) What are the characteristic properties of solids? Explain the classification of solids on the basis of band theory. [5M]
   b) Explain the concept of effective mass of electron. [5M]
   OR
2. a) Derive an expression for the density of electrons in a metal. [5M]
   

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   b) Explain the classification of solids into conductors, semiconductors and insulators on the basis of band theory. [5M]

UNIT - V

1. a) Derive Bragg’s law of X-ray diffraction. [5M]
   b) Explain the powder method for determination of crystal structure. [5M]
   OR
2. a) Explain point defects in crystals. [5M]
   

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   b) Describe the structure of diamond and calculate the atomic packing factor. [5M]

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